12 volt electric dc motors Rotor
12 volt electric dc motors armature core is the main part of the main magnetic circuit and is used to insert the armature winding. The armature core is made of 0.5mm thick silicon steel sheet, which is used to reduce the eddy current loss and the magnetic hysteresis loss in the armature core when the motor is running. The laminated core is fixed on a rotating shaft or rotor bracket. The outer circle of the core is provided with an armature slot, and the slot is embedded in the armature winding.
The armature winding, whose function is to produce the electromagnetic torque and the induced electromotive force, is the key part of the energy conversion of 12v electric motor. It is connected by many coils according to certain rules. The coils adopt high strength paint enameled copper wire is wound into a line or fiberglass bag. Different coil sides divided into two layers are embedded in the armature slot. It must be properly insulated between coil and core, and between the two layer coil sides. In order to prevent the centrifugal force will throw the coil sides out of the slot, the slot have to be fixed with wedge. Extended slot end of the coil part use a thermosetting weftless glass to bind together.
12 volt electric dc motors commutator with brush can make an external DC power to be converted to alternating current in the armature coil
12 volt electric dc motors commutator makes the electromagnetic direction keep constant. In the DC generator, commutator brush, will be converted to alternating electromotive force in the armature coil produce positive and negative brush, which leads to the DC electromotive force. The commutator is a cylinder composed of many segments. The commutator bars is insulated by mica sheet.
The rotation of the rotor shaft plays a supporting role which needs to have certain mechanical strength and stiffness, usually processing by round steel.
brushless DC motor